Apparatus for refrlaeratim machines



(No Mdel.) I

lL. STERNE 8 D. CLEEK. HEAT INTERGHANGING APPARATUS FOR REPRIGERATING MAGHINBS.

Patented July 18.511882.

UNITED STATES PATENT OFFICE.

LOUIS STERNE, 0F LONDON, ENGLAND, AND DUGALD CLERK, 0F GLASGOW SCOTLAND.

HEAT-INTERCHANGING APPARATUS FOR REFRlGERATlNG-MACHINES.

SPECIFICATION forming part of Letters :Patent No. 261,491, dated July 18, 1882.

Application filed May 19, 1882. (No model.) Patented in England August 15, 1881, No. 3,536.

To all whom it may concern:

Be it known that we, LOUIS STERNE and DUGALD CLERK, subjects of the QueenA of Great Britain and Ireland, and residing respectively at London, England, and at Glasgow, Scotland, have invented certain Improvements in Heat-Interchanging Apparatus for Refrigerating-Machines, (for which we have obtained a patent in Great Britain, dated August 15, 1881, No. 3,536,) of which the following is a specification.

Our said invention has for its object the construction of improved simple and compact apparatus for effecting an interchange or heat between air which has been compressed and cold water for the purpose of obtaining` revfrigeratin g effects by the subsequent re-expansion of the compressed air, accordingto a wellknown process.

Our improved apparatus is arranged so that the compressed air may pass through a lengthened course and over extensive surfaces, while the cooling water is passed through a similar course, but in the opposite direction. y

The apparatus consists of a combination of vessels, which may conveniently be of castiron, and each of which is in the form of a cylinder with one end closed -and with a flange 011 the other end.. The cylinders are of graduated sizes, and are placed one within the other, being lixe'd together by their flanged ends, and being shaped to leave thin spaces between.

Figures 1 and 2 on the sheet of drawings are end elevations, but with different portions supposed to be removed in each. Fig. 3 is a longitudinal vertical section, and Fig. 4 is a transverse vertical section.

In these drawings the same reference-numerals are used to mark the same or like parts wherever they are repeated.

The apparatus consists of a combina-tion of vessels, 1 2 3 4 5 6, which may be of cast-iron, and each of which is in the form of a cylinder with one end closed and with a ilange ou the other end. The cylinders are of graduated sizes, and are placed one Within the other, being fixed together by their ilanged ends, and being shaped to leave thin spaces between. Ribs are also formed on the cylinders, or on some of them, as at 7 8, to cause the air and Water to flow in tortuous directions through the spaces, and so increase the length of course. In the space between the outermost vessel, 1, and the next, 2, thereiswater,

which has passed through the other water-A Ward through the innermost vessel, G. In this last vessel, 6, a mid-feather, 12, causes the air to goto the inner end of the vessel and return thence to the outlet 14. The water and air thus pass through alternate spaces, being directed from space to space by suitable passages, those for the air being seen in section at '15 and 16 in Fig. 3, and shown uncovered in Figs. 1 and 2, while those for the water consist of channels formed in suitable positions across the flange-joints, as indicated by dotted lilies at 16, 17, and 1S in Fig. 1, the channels 16 and 17 beingshown uncovered in Fig. 2.

Vhat we claim as our invention is- In heat-interchanging apparatus forrefrigerating-machines, the combination ot' a number of metal vessels of graduated sizes, each having one end closed and the other end Vformed with a ange, the said vessels being bolted together by their flanges and placed one within the other, with thin spaces between them, and the said spaces being connected by passages in two series, for water and air, respectively, with the waterspaces and airspaces alternating with each other', and connected to inlet and outlet passages arranged so that the water and air may pass in opposite directions, substantially as and for the purposes set forth.

In testimony whereof we have signed our names to this specification in the plesence of two subscribing witnesses.

L. STERNE. DUG ALD CLERK. 

